Rows having maximum group value in MySQL

I really need your help to solve this SQL problem, and here is the problem. I have this aorders table:

+----------+---------+-------------+
| OrderID  | LinkID  | InvoiceDate |
+----------+---------+-------------+
| aA000012 | iA00001 | 2002-09-28  |
| aA000013 | iA00001 | 2002-10-28  |
| aA000022 | iA00002 | 2002-10-03  |
| aA000034 | iA00003 | 2002-10-04  |
| aA000035 | iA00003 | 2002-11-04  |
| aA000041 | iA00004 | 2002-10-11  |
| aA000042 | iA00004 | 2002-11-11  |
+----------+---------+-------------+

I need to show this result:

+----------+---------+-------------+
| OrderID  | LinkID  | InvoiceDate |
+----------+---------+-------------+
| aA000013 | iA00001 | 2002-10-28  |
| aA000022 | iA00002 | 2002-10-03  |
| aA000035 | iA00003 | 2002-11-04  |
| aA000042 | iA00004 | 2002-11-11  |
+----------+---------+-------------+

So I tried:

SELECT OrderID,LinkID,InvoiceDate
FROM aorders A
WHERE InvoiceDate =
 (SELECT MAX(InvoiceDate)
 FROM aorders
 WHERE LinkID = A.LinkID)

Unfortunately, I received this error:

ERROR 1064: You have an error in your SQL syntax near 'SELECT MAX(InvoiceDate) FROM aorders WHERE LinkID = A.LinkID)' at line 4

Could you please tell me why I get this error? Is there a way to show only the rows containing the latest InvoiceDate? I am using mySQL, so please help me out.